Letta vs Superblocks
Which Agents AI tool is better in 2026?
Letta
Memory-first agents that learn and improve from experience with natural language.
Superblocks
Enterprise AI app platform with Clark, an agent that builds governed internal apps
Side-by-side
Superblocks is the more established option (raised $60M); pricing is comparable on both sides.
| Metric | Letta | Superblocks |
|---|---|---|
| Taglinei | Memory-first agents that learn and improve from experience with natural language. | Enterprise AI app platform with Clark, an agent that builds governed internal apps |
| Foundedi | — | 2021🏆 |
| HQi | US | New York, United States |
| Employeesi | 1-10🏆 | — |
| Neuron scorei | 23 | 72🏆 |
| Total fundingi | Undisclosed | $60M🏆 |
| Latest roundi | — | Series A · May 2025 |
| Valuationi | — | — |
| Cheapest paid plani | — | Pricing not disclosed |
| Free plani | ✓ Free | ✓ |
| Free triali | ✓ | ✓ |
| Top tier pricei | — | Pricing not disclosed |
| Pricing summaryi | 1 published plans | Free |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Letta and Superblocks.
| Capability | Letta | Superblocks |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✓ |
| SDK languages | 1 (Node.js) | — |
| Free plan | ✓ | ✓ |
| Free trial | ✓ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Letta
- Strong in AI Agents
🔵 Strengths of Superblocks
- Has raised more capital ($60M vs Undisclosed)
- Higher Neuron score (72 vs 23)
- Newer company (2021)
Which should you choose?
Choose Superblocks if price matters most — it starts at Free, which is friendlier for teams watching burn. Both AI Agents tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Superblocks if you want the most established option — it has raised $60M, suggesting more runway for enterprise features, support, and long-term roadmap. For mission-critical workflows or larger teams, that stability often outweighs a lower monthly price.
Frequently asked questions
Letta vs Superblocks — which is better?
It depends on your priority. Letta is the leaner option; Superblocks has broader feature depth. See the side-by-side table above.
Is Letta cheaper than Superblocks?
No — Superblocks's cheapest paid plan is Free, while Letta's is Free.
Do Letta and Superblocks offer free plans?
Letta: Yes, has a free plan. Superblocks: Yes, has a free plan.
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